TY - JOUR
T1 - Kinetics, isotherms, effect of structure, and computational analysis during the removal of three representative pharmaceuticals from water by adsorption using a biochar obtained from oil palm fiber
AU - Grisales-Cifuentes, Claudia M.
AU - Serna Galvis, Efraím A.
AU - Porras, Jazmín
AU - Flórez, Elizabeth
AU - Torres-Palma, Ricardo A.
AU - Acelas, Nancy
N1 - Funding Information:
The authors are grateful to Universidad de Medellín, for financing the project. The authors from UdeA also acknowledge the support provided by MINCIENCIAS COLOMBIA (before named COLCIENCIAS) through the project No. 111577757323 ; as well as Universidad de Antioquia UdeA by means “Programa de Sostenibilidad”. Authors from Uniremington are grateful for financing the project No. 4000000120. E.A. Serna-Galvis thanks MINCIENCIAS COLOMBIA for his Ph.D. fellowship during July 2015-June 2019 (Convocation 647 de 2014).
Publisher Copyright:
© 2021 Elsevier Ltd
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/4
Y1 - 2021/4
N2 - Acetaminophen (ACE), cephalexin (CPX), and valsartan (VAL) are recognized water pollutants, which can be removed by adsorption. Herein, the removal of these pharmaceuticals using a biochar (BP), prepared from oil palm fiber, was tested. It was studied the structural effects of the pharmaceuticals and biochar on the adsorption process supported by experimental and computational results, plus characterizations of the material. The biochar has 76.05 m2 g−1 of surficial area, and carboxylic groups (1.343 mmol g−1) predominantly. The maximum adsorption uptakes were 7.3, 7.9, and 23.85 mg g−1 for ACE, CPX, and VAL, respectively; following pseudo-second-order kinetics. The best pollutants removal was obtained at acidic pH (3.0). Computational analyses indicated that oxygenated groups of BP (able to generate H-bond interactions) influenced the adsorption of pharmaceuticals. It can be remarked that BP is a low-cost adsorbent synthesized easily from wastes, with high feasibility to remove pharmaceutical structures from water.
AB - Acetaminophen (ACE), cephalexin (CPX), and valsartan (VAL) are recognized water pollutants, which can be removed by adsorption. Herein, the removal of these pharmaceuticals using a biochar (BP), prepared from oil palm fiber, was tested. It was studied the structural effects of the pharmaceuticals and biochar on the adsorption process supported by experimental and computational results, plus characterizations of the material. The biochar has 76.05 m2 g−1 of surficial area, and carboxylic groups (1.343 mmol g−1) predominantly. The maximum adsorption uptakes were 7.3, 7.9, and 23.85 mg g−1 for ACE, CPX, and VAL, respectively; following pseudo-second-order kinetics. The best pollutants removal was obtained at acidic pH (3.0). Computational analyses indicated that oxygenated groups of BP (able to generate H-bond interactions) influenced the adsorption of pharmaceuticals. It can be remarked that BP is a low-cost adsorbent synthesized easily from wastes, with high feasibility to remove pharmaceutical structures from water.
KW - Biochar
KW - Palm fiber waste
KW - Pharmaceuticals adsorption
KW - Structural effects
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=85100378728&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2021.124753
DO - 10.1016/j.biortech.2021.124753
M3 - Artículo
AN - SCOPUS:85100378728
SN - 0960-8524
VL - 326
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 124753
ER -
